The early phases of star formation occur in thick and obscured clouds of dust and molecular gas, where the material collapses under the influence of self-gravity, originating protostars. The process of mass accretion on protostars is one of the less known of the whole stellar evolution. The accretion process goes on through circumstellar disc and part of the infalling material is ejected away from the protostar in form of bipolar jets. Jets can be observed more easily with respect to the circumstellar disc and they often represent the only observational target to reveal the presence of their driving source. Protostellar jets interact with the interstellar medium in the form of shock waves which heat the gas that, in turn, cools by emitting atomic, ionic and molecular lines. Through the analysis of the emission lines it is possible to study the physics and the chemestry of the shocked regions and derive the exchange of energy between the protostar and the interstellar medium. This work presents a study of protostellar jets (HH objects) carried out with two different spectroscopic techniques: the classical long-slit spectroscopy and the novel integral field spectroscopy.
Product Identifiers
Publisher
Vdm Verlag
ISBN-13
9783639338508
eBay Product ID (ePID)
190455497
Product Key Features
Author
Luca Calzoletti
Publication Name
An Infrared View of Protostellar Shocks
Format
Paperback
Language
English
Subject
Astronomy
Publication Year
2011
Type
Textbook
Number of Pages
152 Pages
Dimensions
Item Height
229mm
Item Width
152mm
Item Weight
231g
Additional Product Features
Title_Author
Luca Calzoletti
Country/Region of Manufacture
Germany
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